The Donaldson Fuel Filter Cartridge is designed to protect pumps and injectors from contaminants, preventing clogs and providing more power and better fuel mileage. This easy-to-install filter for your engines helps the engine run at optimum performance by ensuring that only clean and dry fuel reaches the combustion chamber. It also protects sensitive fuel system components such as injectors and injection pumps from damaging contaminants. FleetPride is your First Click in Heavy Duty®.